Also known as the Malayan giant squirrel, these guys are among the largest squirrels in the world. Unlike many other squirrel species around the world that readily enter areas of human population, they prefer to stay hidden deep in the forest. I saw a few of them while camping in Kaeng Krachan National Park on the Malay Peninsula of Thailand. Nikon D500 with Nikkor 200-400mm lens (at 400mm) ISO 800, f/5.6 at 1/400th of a second.

It was pretty early in the morning when I first saw this white-handed gibbon in Kaeng Krachan National Park in Thailand. She stuck around for awhile and eventually there was enough light to get some decent photos. Nikon D500 with Nikkor 200-400mm lens (at 200mm) ISO 1600, f/4 at 1/200th of a second.

This masked palm civet (also known as a gem-faced civet) was lurking around my campsite one night in Kaeng Krachan National Park in Thailand. I had seen porcupines the night before and missed the shot. This time I was ready with a remote flash on a tripod to my left. Nikon D810 with Nikkor 200-400mm lens (at 380mm) ISO 400, f/18 at 1/60th of a second, two Nikon SB-900 flash units.

This is one of the many dusky langurs I met while in Thailand. This one photographed in Khlong Saeng, a mostly flooded national park where islands of mountainous land rise out of all the water. Nikon D500 with Nikkor 200-400mm lens (at 400mm) ISO 800, f/4 at 1/200th of a second.

A baby stump-tailed macaque checks out her new world from the safety of her mother’s lap. Photographed near Kaeng Krachan National Park on the Malay Peninsula of Thailand. Nikon D810 with Nikkor 200-400mm lens (at 400mm) ISO 1600, f/5.6 at 1/250th of a second.

Tree monitors are very big lizards — three feet long or more. I spotted this one while on a boat in Khlong Saeng in Thailand. The dead trees were protruding from the water in this permanently flooded region. Nikon D500 with Nikkor 200-400mm lens (at 350mm) ISO 800, f/4 at 1/1250th of a second.

This male stump-tailed macaque might look aggressive, but he was just having a good yawn (while displaying the results of his lack of proper brushing technique). Photographed on the Malay Peninsula of Thailand. Nikon D810 with Nikkor 200-400mm lens (at 240mm) ISO 800, f/4 at 1/160th of a second.

One of the handful of white-handed gibbons that I saw while in Thailand. These guys come in two colors — darker, almost black fur like this one, and also a much lighter, beige color. This gibbon had been quickly moving through the canopy, calling his mate for quite a while as I was scurrying below trying to find an opening in the foliage to grab a shot or two. Nikon D500 with Nikkor 200-400mm lens (at 400mm) ISO 800, f/4 at 1/160th of a second.

I spent about an hour with a troop of more than thirty or so stump-tailed macaques, just outside of Kaeng Krachan National Park in Thailand. There were three babies among them that were naturally the most curious about me. This little guy kept poking his head out from all that foliage providing some nice looks. Nikon D810 with Nikkor 70-200mm lens (at 200mm) ISO 1600, f/4 at 1/1000th of a second.

A stump-tailed macaque relaxes in a tree while waiting for the rest of the troop to catch up. I think it goes without saying that guy is in fact a guy. He allowed a close approach and I was able to use my wide angle lens to get him within his forest environment. Nikon D810 with Nikkor 17-35mm lens (at 17mm) ISO 1600, f/4.5 at 1/400th of a second.